/* shell.c -- GNU's idea of the POSIX shell specification. */
-/* Copyright (C) 1987-2009 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2012 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
static int want_initial_help; /* --help option */
int debugging_mode = 0; /* In debugging mode with --debugger */
-int no_line_editing = 0; /* Don't do fancy line editing. */
+#if defined (READLINE)
+int no_line_editing = 0; /* non-zero -> don't do fancy line editing. */
+#else
+int no_line_editing = 1; /* can't have line editing without readline */
+#endif
int dump_translatable_strings; /* Dump strings in $"...", don't execute. */
int dump_po_strings; /* Dump strings in $"..." in po format */
int wordexp_only = 0; /* Do word expansion only */
int posixly_correct = 0; /* Non-zero means posix.2 superset. */
#endif
-
/* Some long-winded argument names. These are obviously new. */
#define Int 1
#define Charp 2
{ "noprofile", Int, &no_profile, (char **)0x0 },
{ "norc", Int, &no_rc, (char **)0x0 },
{ "posix", Int, &posixly_correct, (char **)0x0 },
+#if defined (WORDEXP_OPTION)
{ "protected", Int, &protected_mode, (char **)0x0 },
+#endif
{ "rcfile", Charp, (int *)0x0, &bashrc_file },
#if defined (RESTRICTED_SHELL)
{ "restricted", Int, &restricted, (char **)0x0 },
#endif
{ "verbose", Int, &echo_input_at_read, (char **)0x0 },
{ "version", Int, &do_version, (char **)0x0 },
+#if defined (WORDEXP_OPTION)
{ "wordexp", Int, &wordexp_only, (char **)0x0 },
+#endif
{ (char *)0x0, Int, (int *)0x0, (char **)0x0 }
};
char **subshell_argv;
char **subshell_envp;
+char *exec_argv0;
+
#if defined (BUFFERED_INPUT)
/* The file descriptor from which the shell is reading input. */
int default_buffered_input = -1;
static int open_shell_script __P((char *));
static void set_bash_input __P((void));
static int run_one_command __P((char *));
+#if defined (WORDEXP_OPTION)
static int run_wordexp __P((char *));
+#endif
static int uidget __P((void));
#endif
/* Catch early SIGINTs. */
- code = setjmp (top_level);
+ code = setjmp_nosigs (top_level);
if (code)
exit (2);
+ xtrace_init ();
+
#if defined (USING_BASH_MALLOC) && defined (DEBUG) && !defined (DISABLE_MALLOC_WRAPPERS)
# if 1
malloc_set_register (1);
shell_name++;
shell_reinitialize ();
- if (setjmp (top_level))
+ if (setjmp_nosigs (top_level))
exit (2);
}
login_shell = -login_shell;
}
- set_login_shell (login_shell != 0);
+ set_login_shell ("login_shell", login_shell != 0);
if (dump_po_strings)
dump_translatable_strings = 1;
else
init_noninteractive ();
-#define CLOSE_FDS_AT_LOGIN
-#if defined (CLOSE_FDS_AT_LOGIN)
/*
* Some systems have the bad habit of starting login shells with lots of open
* file descriptors. For instance, most systems that have picked up the
* pre-4.0 Sun YP code leave a file descriptor open each time you call one
* of the getpw* functions, and it's set to be open across execs. That
- * means one for login, one for xterm, one for shelltool, etc.
+ * means one for login, one for xterm, one for shelltool, etc. There are
+ * also systems that open persistent FDs to other agents or files as part
+ * of process startup; these need to be set to be close-on-exec.
*/
if (login_shell && interactive_shell)
{
for (i = 3; i < 20; i++)
- close (i);
+ SET_CLOSE_ON_EXEC (i);
}
-#endif /* CLOSE_FDS_AT_LOGIN */
/* If we're in a strict Posix.2 mode, turn on interactive comments,
alias expansion in non-interactive shells, and other Posix.2 things. */
/* running_under_emacs == 2 for `eterm' */
running_under_emacs = (emacs != 0) || (term && STREQN (term, "emacs", 5));
- running_under_emacs += term && STREQN (term, "eterm", 5) && strstr (emacs, "term");
+ running_under_emacs += term && STREQN (term, "eterm", 5) && emacs && strstr (emacs, "term");
if (running_under_emacs)
gnu_error_format = 1;
maybe_make_restricted (shell_name);
#endif /* RESTRICTED_SHELL */
+#if defined (WORDEXP_OPTION)
if (wordexp_only)
{
startup_state = 3;
last_command_exit_value = run_wordexp (argv[arg_index]);
exit_shell (last_command_exit_value);
}
+#endif
if (command_execution_string)
{
/* Bind remaining args to $1 ... $n */
arg_index = bind_args (argv, arg_index, argc, 1);
- if (debugging_mode && locally_skip_execution == 0 && running_setuid == 0)
+ if (debugging_mode && locally_skip_execution == 0 && running_setuid == 0 && dollar_vars[1])
start_debugger ();
/* Do the things that should be done only for interactive shells. */
exit_shell (s)
int s;
{
+ fflush (stdout); /* XXX */
+ fflush (stderr);
+
/* Do trap[0] if defined. Allow it to override the exit status
passed to us. */
if (signal_is_trapped (0))
#endif /* PROCESS_SUBSTITUTION */
#if defined (HISTORY)
- if (interactive_shell)
+ if (remember_on_history)
maybe_save_shell_history ();
#endif /* HISTORY */
exit (s);
}
+/* Exit a subshell, which includes calling the exit trap. We don't want to
+ do any more cleanup, since a subshell is created as an exact copy of its
+ parent. */
+void
+subshell_exit (s)
+ int s;
+{
+ fflush (stdout);
+ fflush (stderr);
+
+ /* Do trap[0] if defined. Allow it to override the exit status
+ passed to us. */
+ if (signal_is_trapped (0))
+ s = run_exit_trap ();
+
+ sh_exit (s);
+}
+
/* Source the bash startup files. If POSIXLY_CORRECT is non-zero, we obey
the Posix.2 startup file rules: $ENV is expanded, and if the file it
names exists, that file is sourced. The Posix.2 rules are in effect
current_user.egid = current_user.gid;
}
+#if defined (WORDEXP_OPTION)
static int
run_wordexp (words)
char *words;
int code, nw, nb;
WORD_LIST *wl, *tl, *result;
- code = setjmp (top_level);
+ code = setjmp_nosigs (top_level);
if (code != NOT_JUMPED)
{
switch (code)
{
- /* Some kind of throw to top_level has occured. */
+ /* Some kind of throw to top_level has occurred. */
case FORCE_EOF:
return last_command_exit_value = 127;
case ERREXIT:
return (0);
}
+#endif
#if defined (ONESHOT)
/* Run one command, given as the argument to the -c option. Tell
{
int code;
- code = setjmp (top_level);
+ code = setjmp_nosigs (top_level);
if (code != NOT_JUMPED)
{
#endif /* PROCESS_SUBSTITUTION */
switch (code)
{
- /* Some kind of throw to top_level has occured. */
+ /* Some kind of throw to top_level has occurred. */
case FORCE_EOF:
return last_command_exit_value = 127;
case ERREXIT:
}
free (dollar_vars[0]);
- dollar_vars[0] = savestring (script_name);
+ dollar_vars[0] = exec_argv0 ? savestring (exec_argv0) : savestring (script_name);
+ if (exec_argv0)
+ {
+ free (exec_argv0);
+ exec_argv0 = (char *)NULL;
+ }
#if defined (ARRAY_VARS)
GET_ARRAY_FROM_VAR ("FUNCNAME", funcname_v, funcname_a);
not match with ours. */
fd = move_to_high_fd (fd, 1, -1);
-#if defined (__CYGWIN__) && defined (O_TEXT)
- setmode (fd, O_TEXT);
-#endif
-
#if defined (BUFFERED_INPUT)
default_buffered_input = fd;
SET_CLOSE_ON_EXEC (default_buffered_input);
{
if (*shell_name == '-')
shell_name++;
- login_shell++;
+ login_shell = 1;
}
if (shell_name[0] == 's' && shell_name[1] == 'h' && shell_name[2] == '\0')
expand_aliases = posixly_correct; /* XXX - was 0 not posixly_correct */
no_line_editing = 1;
#if defined (JOB_CONTROL)
- set_job_control (0);
+ /* Even if the shell is not interactive, enable job control if the -i or
+ -m option is supplied at startup. */
+ set_job_control (forced_interactive||jobs_m_flag);
#endif /* JOB_CONTROL */
}
/* Don't fetch this more than once. */
if (current_user.user_name == 0)
{
+#if defined (__TANDEM)
+ entry = getpwnam (getlogin ());
+#else
entry = getpwuid (current_user.uid);
+#endif
if (entry)
{
current_user.user_name = savestring (entry->pw_name);
#endif
/* Initialize the data structures for storing and running jobs. */
- initialize_job_control (0);
+ initialize_job_control (jobs_m_flag);
/* Initialize input streams to null. */
initialize_bash_input ();
initialize_flags ();
/* Initialize the shell options. Don't import the shell options
- from the environment variable $SHELLOPTS if we are running in
- privileged or restricted mode or if the shell is running setuid. */
+ from the environment variables $SHELLOPTS or $BASHOPTS if we are
+ running in privileged or restricted mode or if the shell is running
+ setuid. */
#if defined (RESTRICTED_SHELL)
initialize_shell_options (privileged_mode||restricted||running_setuid);
+ initialize_bashopts (privileged_mode||restricted||running_setuid);
#else
initialize_shell_options (privileged_mode||running_setuid);
+ initialize_bashopts (privileged_mode||running_setuid);
#endif
}
forced_interactive = interactive_shell = subshell_environment = 0;
expand_aliases = 0;
+ /* XXX - should we set jobs_m_flag to 0 here? */
+
#if defined (HISTORY)
bash_history_reinit (0);
#endif /* HISTORY */
fprintf (fp, "\t--%s\n", long_args[i].name);
fputs (_("Shell options:\n"), fp);
- fputs (_("\t-irsD or -c command or -O shopt_option\t\t(invocation only)\n"), fp);
+ fputs (_("\t-ilrsD or -c command or -O shopt_option\t\t(invocation only)\n"), fp);
for (i = 0, set_opts = 0; shell_builtins[i].name; i++)
if (STREQ (shell_builtins[i].name, "set"))
set_opts = savestring (shell_builtins[i].short_doc);
if (set_opts)
{
- s = xstrchr (set_opts, '[');
+ s = strchr (set_opts, '[');
if (s == 0)
s = set_opts;
while (*++s == '-')
;
- t = xstrchr (s, ']');
+ t = strchr (s, ']');
if (t)
*t = '\0';
fprintf (fp, _("\t-%s or -o option\n"), s);
projects / platform / upstream / bash.git / blobdiff